My own take is that there are three levels to meaning:

Genetic legacy, societal legacy, and simple vibing.

Most anyone who has had children that have outlived them have satisfied the genetic legacy. Yes, that dilutes very rapidly, but it’s there.

Societal/civilizational legacy is where you are remembered by many after you have died. Thomas Edison and Nikolai Tesla achieved civilizational legacy. So did Cleopatra and Alexander and Genghis Kahn. Rush Limbaugh? Not so much. He failed at leaving a legacy.

The final level is vibing. Finding yourself, understanding yourself, finding peace within yourself, and being one with the universe. Enjoying every day that comes along. Finding satisfaction in everything you do.